My FMF pipe project, with pics!

VENICE BOY · #1 (**permalink**) 05-08-2008, 12:37 AM

Here are some "in progress" pics of the pipe that I am building in welding class...
My friend Jim who works in the tool room, used to design & build pipes at FMF.
(He totally talked me into building this.)
It will be kinda like the pipe on Ghost0's MB Cruiser, (just not as rounded.)
I made the header from the leg of a classroom chair, & some 3/8 flat steel for the flange.

This is only the finished header; I will start making the expansion chamber on Monday...

The inside of the flange matches the port perfectly & blends into the pipe the same way.

Below, you can see how much bigger mine is compared to a stock pipe. (you can also see the brass bell hanging from the kickstand mount.)

Ghost0 · #2 (**permalink**) 05-08-2008, 01:08 AM

Looking good so far. May I suggest making it adjustable? By adjustable I mean being able to change the distance from the exhaust port to the expansion chamber. Every bike, engine, gearing is different so to make it truly tuneable you need to be able to adjust the length. Can't wait to see more.

VENICE BOY · #3 (**permalink**) 05-08-2008, 08:34 AM

Quote:

Originally Posted by Ghost0

Looking good so far. May I suggest making it adjustable? By adjustable I mean being able to change the distance from the exhaust port to the expansion chamber. Every bike, engine, gearing is different so to make it truly tuneable you need to be able to adjust the length. Can't wait to see more.

Yeah... We were planning on trying different lengths for tuning, but I think a slider system would save a lot of time. Thanks for the idea!

I still have three more chair legs to make the final pipe!